ch 22 - lymphatic practice questions Flashcards

1
Q

Lymphocytes that assist in the regulation and coordination of the immune response are __________.

A

helper and suppressor T cells

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2
Q

The largest collection of lymphoid tissue in the body is contained within the

A

spleen

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3
Q

The “first line” of cellular defense against pathogenic invasion is

A

phagocytes

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4
Q

An adaptive defense mechanism is always activated by

A

an antigen

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5
Q

Before an antigen can stimulate a lymphocyte, it must first be processed by

A

a macrophage

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6
Q

Activated B cells produce plasma cells that are specialized to

A

synthesize and secrete antibodies

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7
Q

The epitope site is the certain portion of the antigen’s exposed surface where

A

where the antibody atttaches

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8
Q

For a B cell to be activated, it must

A

be bound by a helper T cell at a class II MHC and bind an antigen to a surface antibody

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9
Q

A baby developing in the womb has __________ immunity because it receives __________ antibodies from its mother.

A

naturally acquired passive; IgG

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10
Q

When an immune response mistakenly targets normal body cells and tissues, the result is

A

autoimmune disorder

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11
Q

What is the lymphatic function of the white pulp of the spleen?

A

initiation of immune responses by B cells and T cells

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12
Q

The vaccination of antigenic materials into the body is called

A

artificially induced active immunity

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13
Q

The primary response of CD8 T cell differentiation in cell-mediated immunity is the production of

A

cytotoxic T cells

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14
Q

helper T cells activate

A

B cells

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15
Q

B lymphocytes differentiate int

A

memory and plasma cells

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16
Q

IgD

A

antibodies on the surface of B cells/antigen recognition

18
Q

IgG

A

80% of all antibodies

can cross placenta

19
Q

IgA

A

found primarily in glandular secretions such as mucus, tears, saliva and semen

20
Q

IgM

A

first class of antibody secreted/first response

21
Q

IgE

A

attaches to the exposed surfaces of basophils and mast cells

  • allergy, anaphylaxis,
22
Q

Lack of resistance is also known as:

A

susceptibility

23
Q

What causes lymph from the small intestines to appear white?

24
Q

Which portion of the lymph node does not contain any lymphatic nodules.

A

inner cortex

25
Which anti-microbial substances promote cytolysis, phagocytosis and inflammation?
complement proteins
26
Which does NOT induce vasodilation and permeability (increased fluid flow) to an infection site?
perforin
27
Which class of cells includes macrophages, B cells and dendritic cells?
antigen presenting cells
28
Which cells display CD4 proteins and interact with MHC Class II antigens?
helper T cells
29
Which leads to inflammation, enhancement of phagocytosis and lysis of microbes?
Classical and Alternative complement systems
30
The inability of the immune system to protect the body from a pathogen causes
immunodeficiency diseases
31
Natural exposure to an infectious agent leads to:
active immunity
32
Which class of antibodies indicates a recent invasion?
IgM
33
what cells are part of the body’s second line of defense?
Natural killer cells
34
The ability of an antigen to react specifically with the antibodies or cells it has provoked is called
reactivity
35
Which cell is considered to be the most important cell in the immune system?
helper T cells
36
what kind of immunity are vaccines
artificially active